/* === Reset & Base === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --chrome-light: #d8d8e0;
    --chrome-mid: #a0a0a8;
    --chrome-dark: #2a2a32;
    --accent-mint: #7ed88c;
    --accent-amber: #e8b84b;
    --accent-coral: #e87c6b;
    --surface-marble: #f0eff4;
    --marble-edge: #e4e3ea;
    --text-primary: #1e1e26;
    --border-light: #c8c8d0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Quicksand', sans-serif;
    font-weight: 400;
    font-size: clamp(1rem, 1.8vw, 1.15rem);
    line-height: 1.72;
    letter-spacing: 0.01em;
    color: var(--text-primary);
    background: var(--chrome-light);
    overflow-x: hidden;
}

/* === Boot Overlay === */
#boot-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: var(--chrome-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

#boot-overlay.fade-out {
    opacity: 0;
    transform: scale(1.3);
    pointer-events: none;
}

#boot-overlay.hidden {
    display: none;
}

#boot-terminal {
    width: 80vw;
    max-width: 900px;
    height: 60vh;
    max-height: 520px;
    border-radius: 16px;
    border: 12px solid;
    border-image: linear-gradient(135deg, #c0c0c0, #e8e8e8, #a0a0a0) 1;
    border-radius: 16px;
    background: var(--chrome-dark);
    padding: 3rem;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* Chrome bezel with border-radius workaround */
#boot-terminal {
    border: none;
    outline: 12px solid var(--chrome-mid);
    box-shadow:
        inset 0 0 0 1px rgba(255,255,255,0.05),
        0 0 60px rgba(0,0,0,0.4),
        0 0 0 12px transparent;
    background-image:
        linear-gradient(var(--chrome-dark), var(--chrome-dark)),
        linear-gradient(135deg, #c0c0c0, #e8e8e8, #a0a0a8, #d8d8e0);
    background-origin: border-box;
    background-clip: padding-box, border-box;
    border: 12px solid transparent;
}

#boot-content {
    position: relative;
    z-index: 2;
}

#ascii-title {
    font-family: 'Space Mono', monospace;
    font-size: clamp(0.7rem, 1.5vw, 1rem);
    color: var(--accent-mint);
    margin-bottom: 2rem;
    white-space: pre;
    line-height: 1.3;
}

#status-lines {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.status-line {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: 'Space Mono', monospace;
    font-size: clamp(0.75rem, 1.2vw, 0.9rem);
    color: var(--chrome-light);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.status-line.visible {
    opacity: 1;
}

.status-pill {
    width: 12px;
    height: 12px;
    border-radius: 6px;
    background: var(--accent-amber);
    flex-shrink: 0;
    transition: background 0.5s ease;
}

.status-pill.complete {
    background: var(--accent-mint);
}

/* Floating Particles */
.particle {
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: linear-gradient(135deg, #c0c0c0, #e8e8e8);
    opacity: 0.3;
    bottom: -10px;
    animation: floatUp 8s ease-in-out infinite;
}

@keyframes floatUp {
    0% { transform: translateY(0) translateX(0); opacity: 0.3; }
    50% { transform: translateY(-200px) translateX(10px); opacity: 0.15; }
    100% { transform: translateY(-400px) translateX(-5px); opacity: 0; }
}

/* === Editorial Content === */
#editorial-content {
    opacity: 0;
    transition: opacity 0.8s ease 0.3s;
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem 6rem;
}

#editorial-content.visible {
    opacity: 1;
}

/* Section Grid: 65/35 two-column */
.section-grid {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(240px, 1fr);
    gap: 2rem;
    border-left: 2px dashed var(--border-light);
    padding-left: 0;
}

.main-column {
    padding-left: 2rem;
}

.margin-column {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    padding-left: 2rem;
    border-left: 2px dashed var(--border-light);
}

.editorial-section {
    margin-bottom: 4rem;
}

/* Section Divider */
.section-divider {
    height: 2px;
    background: linear-gradient(90deg, var(--chrome-mid), var(--chrome-light), var(--chrome-mid));
    margin: 3rem 0;
}

/* Headings */
h1, h2, h3 {
    font-family: 'Nunito', sans-serif;
    text-transform: lowercase;
    letter-spacing: 0.03em;
    color: var(--text-primary);
}

h1 {
    font-weight: 800;
    font-size: clamp(2rem, 5vw, 4rem);
    margin-bottom: 1.5rem;
}

h2 {
    font-weight: 700;
    font-size: clamp(1.4rem, 3vw, 2.4rem);
    margin-bottom: 1rem;
}

h3 {
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

/* Underline-draw animation on headings */
.section-heading {
    position: relative;
    display: inline-block;
    padding-bottom: 0.3rem;
}

.section-heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent-mint);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.section-heading.drawn::after {
    transform: scaleX(1);
}

/* Body text */
p {
    margin-bottom: 1.2rem;
}

.lead-text {
    font-weight: 500;
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    line-height: 1.65;
    color: var(--chrome-dark);
}

/* === Marginalia Cards === */
.marginalia-card {
    background:
        repeating-linear-gradient(137deg, transparent 0px, transparent 18px, rgba(160,160,168,0.12) 18px, rgba(160,160,168,0.12) 19px),
        repeating-linear-gradient(73deg, transparent 0px, transparent 24px, rgba(30,30,38,0.06) 24px, rgba(30,30,38,0.06) 25px),
        radial-gradient(ellipse at 30% 40%, #f0eff4 0%, #e4e3ea 100%);
    border-radius: 16px;
    padding: 1.25rem;
    border: 1px solid var(--chrome-mid);
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.sticky-card {
    position: sticky;
    top: 2rem;
}

.marginalia-label {
    font-family: 'Space Mono', monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--chrome-mid);
    letter-spacing: 0.08em;
    margin-bottom: 0.5rem;
}

.marginalia-text {
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 0;
}

.marginalia-quote {
    font-family: 'Nunito', sans-serif;
    font-weight: 300;
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    line-height: 1.5;
    color: var(--chrome-dark);
    margin-bottom: 0.5rem;
}

.marginalia-attribution {
    font-family: 'Space Mono', monospace;
    font-size: 0.8rem;
    color: var(--chrome-mid);
    margin-bottom: 0;
}

.marginalia-icon {
    margin-bottom: 0.75rem;
}

/* === Concept Band === */
.concept-band {
    margin-bottom: 4rem;
    padding: 2rem 0;
}

.band-heading {
    margin-left: 2rem;
}

.concept-scroll {
    display: flex;
    gap: 1.5rem;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding: 1.5rem 2rem;
    -webkit-overflow-scrolling: touch;
}

.concept-scroll::-webkit-scrollbar {
    height: 6px;
}

.concept-scroll::-webkit-scrollbar-track {
    background: var(--chrome-light);
    border-radius: 3px;
}

.concept-scroll::-webkit-scrollbar-thumb {
    background: var(--chrome-mid);
    border-radius: 3px;
}

.concept-node {
    min-width: 280px;
    max-width: 280px;
    scroll-snap-align: start;
    border-radius: 24px;
    padding: 1.75rem;
    background:
        repeating-linear-gradient(137deg, transparent 0px, transparent 18px, rgba(160,160,168,0.12) 18px, rgba(160,160,168,0.12) 19px),
        repeating-linear-gradient(73deg, transparent 0px, transparent 24px, rgba(30,30,38,0.06) 24px, rgba(30,30,38,0.06) 25px),
        radial-gradient(ellipse at 30% 40%, #f0eff4 0%, #e4e3ea 100%);
    border: 2px solid transparent;
    background-clip: padding-box;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    position: relative;
    transition: box-shadow 0.3s ease, transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    opacity: 0;
    transform: translateY(40px) scale(0.9);
}

.concept-node::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 26px;
    background: linear-gradient(135deg, #c0c0c0, #e8e8e8, #a0a0a8, #d8d8e0);
    z-index: -1;
    transition: background 0.3s ease;
}

.concept-node.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    transition: opacity 0.5s ease, transform 0.7s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.concept-node:hover {
    box-shadow: 0 6px 24px rgba(0,0,0,0.14);
    transform: translateY(-4px) scale(1.02);
}

.concept-node:hover::before {
    background: linear-gradient(315deg, #c0c0c0, #e8e8e8, #a0a0a8, #d8d8e0);
}

.node-icon {
    margin-bottom: 1rem;
}

.node-title {
    font-family: 'Nunito', sans-serif;
    font-weight: 800;
    text-transform: lowercase;
    letter-spacing: 0.03em;
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    position: relative;
    display: inline-block;
}

.node-title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-mint);
    border-radius: 1px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.concept-node:hover .node-title::after {
    transform: scaleX(1);
}

.node-definition {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--chrome-dark);
    margin-bottom: 0;
}

/* === Timeline === */
.timeline-section {
    margin-bottom: 4rem;
    padding: 2rem;
}

.timeline-ribbon {
    position: relative;
    padding: 3rem 0;
    margin-top: 1.5rem;
}

.timeline-line {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--chrome-mid), var(--chrome-light), var(--chrome-mid));
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline-line.drawn {
    transform: scaleX(1);
}

.timeline-markers {
    display: flex;
    justify-content: space-between;
    position: relative;
    z-index: 2;
}

.timeline-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    cursor: pointer;
}

.marker-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: linear-gradient(135deg, #c0c0c0, #e8e8e8, #a0a0a8);
    border: 2px solid var(--chrome-mid);
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease;
    position: relative;
    z-index: 2;
}

.timeline-marker:hover .marker-dot {
    transform: translateY(-8px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    background: var(--accent-mint);
    border-color: var(--accent-mint);
}

.marker-tooltip {
    position: absolute;
    top: -80px;
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
    background:
        repeating-linear-gradient(137deg, transparent 0px, transparent 18px, rgba(160,160,168,0.12) 18px, rgba(160,160,168,0.12) 19px),
        radial-gradient(ellipse at 30% 40%, #f0eff4 0%, #e4e3ea 100%);
    border: 1px solid var(--chrome-mid);
    border-radius: 12px;
    padding: 0.75rem 1rem;
    width: 200px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
    text-align: center;
}

.timeline-marker:hover .marker-tooltip {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.tooltip-year {
    display: block;
    font-family: 'Space Mono', monospace;
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--accent-amber);
    margin-bottom: 0.25rem;
}

.tooltip-text {
    display: block;
    font-size: 0.8rem;
    line-height: 1.4;
    color: var(--text-primary);
}

/* === Archive Footer === */
#archive-footer {
    background: var(--chrome-dark);
    padding: 1.5rem 2rem;
    position: relative;
    overflow: hidden;
}

.footer-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.footer-prompt {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
}

.prompt-text {
    font-family: 'Space Mono', monospace;
    font-size: clamp(0.85rem, 1.4vw, 1rem);
    color: var(--accent-mint);
}

.prompt-cursor {
    font-family: 'Space Mono', monospace;
    font-size: clamp(0.85rem, 1.4vw, 1rem);
    color: var(--accent-mint);
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* === Responsive === */
@media (max-width: 768px) {
    .section-grid {
        grid-template-columns: 1fr;
        border-left: none;
    }

    .main-column {
        padding-left: 0;
    }

    .margin-column {
        border-left: none;
        padding-left: 0;
    }

    .sticky-card {
        position: static;
    }

    #boot-terminal {
        width: 92vw;
        height: 70vh;
        padding: 1.5rem;
    }

    .concept-node {
        min-width: 260px;
        max-width: 260px;
    }

    .marker-tooltip {
        width: 150px;
    }
}